If it is a painting, it could well be finished but are the stitches already there, causing confusion? As a stitched piece I can see it needing more stitching both in blended colours and highlighting shades. More stitching will add texture and it will change from what it is now. Take a paper copy of it and start drawing stitching on that. When you did it a few years ago what was your thoughts then and why have they changed (or not)?I find it incredibly difficult to revisit a piece and normally end up following my gut instinct!